The Big Bang Theory will celebrate its 200th episode later this month – and there are a host of cameos to celebrate.

From newbie Adam West to old regular Sara Gilbert, fans of the CBS show have plenty to look forward to as season nine continues.

While us folk in the UK have a little while longer until we get to see the second half of the ninth series on E4, we can whet our appetite with this sneak preview of the cameos coming up in the 200th episode.

All of the celebrity cameos in the 200th episode:

Adam West – the Batman star will make his debut on the show in a part not yet revealed

Sara Gilbert – she played Leonard’s ex-girlfriend Leslie Winkle

Surely she won’t interfere with Leonard and Penny?

Christine Baranski – Leonard’s mother Beverly Hofstadter

CBS

Get ready for more Sheldon/Beverly lovin’.

Ross Bowie – Sheldon and Leonard’s work rival Barry Kripke

We’re intrigued…

Will Wheaton – as Will Wheaton

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The Big Bang Theory has seen a string of celebrity cameos in its nine-year run.

Other famous faces to have graced the studios are Stephen Hawking, Leonard Nimoy and Stan Lee.

The Big Bang Theory’s 200th episode will air on February 25 at 8pm on CBS. It will be screened later in the UK on E4.